1997 Ford Thunderbird running rich

1997 FORD THUNDERBIRD
120,000 MILES • 6 CYL • 2WD • AUTOMATIC
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MARKTYLR
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  • 3 POSTS
rough running at all speeds . after resetting computer, car will run fine for 15-25 miles then returns to rough running. replaced one fuel injector and cleaned all others 10000 miles ago
Oct 23, 2009 at 11:33 AM
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RASMATAZ
  • ✓ASE Certified Mechanic
  • 75,992 POSTS
  • ASE Certified Mechanic
Running rich:

Could be a bad O2 sensor, excessive fuel pressure (bad fuel pressure regulator or plugged return line), leaky fuel injectors, dirty air filter or restricted air inlet, or a defective coolant sensor that prevents the engine management system from going into closed loop mode.
Oct 23, 2009 at 11:41 AM
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MARKTYLR
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  • 3 POSTS
where is it located
Oct 23, 2009 at 1:23 PM
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RASMATAZ
  • ✓ASE Certified Mechanic
  • 75,992 POSTS
  • ASE Certified Mechanic
I strongly recommend you bring her in this one can be a nightmare to fix
Oct 23, 2009 at 5:16 PM
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